567 lines
18 KiB
Go
567 lines
18 KiB
Go
package itest
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import (
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"context"
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"crypto/rand"
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"sort"
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"testing"
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"time"
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"github.com/btcsuite/btcutil"
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"github.com/lightningnetwork/lnd/amp"
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"github.com/lightningnetwork/lnd/chainreg"
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"github.com/lightningnetwork/lnd/lnrpc"
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"github.com/lightningnetwork/lnd/lnrpc/routerrpc"
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"github.com/lightningnetwork/lnd/lntest"
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"github.com/lightningnetwork/lnd/lntypes"
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"github.com/stretchr/testify/require"
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)
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// testSendPaymentAMPInvoice tests that we can send an AMP payment to a
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// specified AMP invoice using SendPaymentV2.
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func testSendPaymentAMPInvoice(net *lntest.NetworkHarness, t *harnessTest) {
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ctxb := context.Background()
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ctx := newMppTestContext(t, net)
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defer ctx.shutdownNodes()
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const paymentAmt = btcutil.Amount(300000)
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// Set up a network with three different paths Alice <-> Bob. Channel
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// capacities are set such that the payment can only succeed if (at
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// least) three paths are used.
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//
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// _ Eve _
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// / \
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// Alice -- Carol ---- Bob
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// \ /
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// \__ Dave ____/
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//
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ctx.openChannel(ctx.carol, ctx.bob, 135000)
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ctx.openChannel(ctx.alice, ctx.carol, 235000)
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ctx.openChannel(ctx.dave, ctx.bob, 135000)
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ctx.openChannel(ctx.alice, ctx.dave, 135000)
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ctx.openChannel(ctx.eve, ctx.bob, 135000)
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ctx.openChannel(ctx.carol, ctx.eve, 135000)
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defer ctx.closeChannels()
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ctx.waitForChannels()
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// Subscribe to bob's invoices.
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req := &lnrpc.InvoiceSubscription{}
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ctxc, cancelSubscription := context.WithCancel(ctxb)
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bobInvoiceSubscription, err := ctx.bob.SubscribeInvoices(ctxc, req)
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require.NoError(t.t, err)
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defer cancelSubscription()
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addInvoiceResp, err := ctx.bob.AddInvoice(context.Background(), &lnrpc.Invoice{
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Value: int64(paymentAmt),
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IsAmp: true,
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})
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require.NoError(t.t, err)
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// Ensure we get a notification of the invoice being added by Bob.
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rpcInvoice, err := bobInvoiceSubscription.Recv()
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require.NoError(t.t, err)
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require.False(t.t, rpcInvoice.Settled) // nolint:staticcheck
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require.Equal(t.t, lnrpc.Invoice_OPEN, rpcInvoice.State)
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require.Equal(t.t, int64(0), rpcInvoice.AmtPaidSat)
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require.Equal(t.t, int64(0), rpcInvoice.AmtPaidMsat)
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require.Equal(t.t, 0, len(rpcInvoice.Htlcs))
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// Increase Dave's fee to make the test deterministic. Otherwise it
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// would be unpredictable whether pathfinding would go through Charlie
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// or Dave for the first shard.
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_, err = ctx.dave.UpdateChannelPolicy(
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context.Background(),
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&lnrpc.PolicyUpdateRequest{
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Scope: &lnrpc.PolicyUpdateRequest_Global{Global: true},
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BaseFeeMsat: 500000,
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FeeRate: 0.001,
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TimeLockDelta: 40,
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},
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)
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if err != nil {
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t.Fatalf("dave policy update: %v", err)
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}
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ctxt, _ := context.WithTimeout(context.Background(), 4*defaultTimeout)
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payment := sendAndAssertSuccess(
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ctxt, t, ctx.alice,
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&routerrpc.SendPaymentRequest{
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PaymentRequest: addInvoiceResp.PaymentRequest,
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TimeoutSeconds: 60,
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FeeLimitMsat: noFeeLimitMsat,
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},
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)
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// Check that Alice split the payment in at least three shards. Because
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// the hand-off of the htlc to the link is asynchronous (via a mailbox),
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// there is some non-determinism in the process. Depending on whether
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// the new pathfinding round is started before or after the htlc is
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// locked into the channel, different sharding may occur. Therefore we
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// can only check if the number of shards isn't below the theoretical
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// minimum.
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succeeded := 0
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for _, htlc := range payment.Htlcs {
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if htlc.Status == lnrpc.HTLCAttempt_SUCCEEDED {
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succeeded++
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}
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}
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const minExpectedShards = 3
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if succeeded < minExpectedShards {
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t.Fatalf("expected at least %v shards, but got %v",
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minExpectedShards, succeeded)
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}
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// There should now be a settle event for the invoice.
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rpcInvoice, err = bobInvoiceSubscription.Recv()
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require.NoError(t.t, err)
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// Also fetch Bob's invoice from ListInvoices and assert it is equal to
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// the one recevied via the subscription.
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invoiceResp, err := ctx.bob.ListInvoices(
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ctxb, &lnrpc.ListInvoiceRequest{},
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)
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require.NoError(t.t, err)
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require.Equal(t.t, 1, len(invoiceResp.Invoices))
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assertInvoiceEqual(t.t, rpcInvoice, invoiceResp.Invoices[0])
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// Assert that the invoice is settled for the total payment amount and
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// has the correct payment address.
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require.True(t.t, rpcInvoice.Settled) // nolint:staticcheck
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require.Equal(t.t, lnrpc.Invoice_SETTLED, rpcInvoice.State)
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require.Equal(t.t, int64(paymentAmt), rpcInvoice.AmtPaidSat)
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require.Equal(t.t, int64(paymentAmt*1000), rpcInvoice.AmtPaidMsat)
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// Finally, assert that the same set id is recorded for each htlc, and
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// that the preimage hash pair is valid.
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var setID []byte
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require.Equal(t.t, succeeded, len(rpcInvoice.Htlcs))
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for _, htlc := range rpcInvoice.Htlcs {
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require.NotNil(t.t, htlc.Amp)
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if setID == nil {
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setID = make([]byte, 32)
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copy(setID, htlc.Amp.SetId)
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}
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require.Equal(t.t, setID, htlc.Amp.SetId)
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// Parse the child hash and child preimage, and assert they are
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// well-formed.
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childHash, err := lntypes.MakeHash(htlc.Amp.Hash)
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require.NoError(t.t, err)
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childPreimage, err := lntypes.MakePreimage(htlc.Amp.Preimage)
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require.NoError(t.t, err)
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// Assert that the preimage actually matches the hashes.
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validPreimage := childPreimage.Matches(childHash)
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require.True(t.t, validPreimage)
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}
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}
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// testSendPaymentAMP tests that we can send an AMP payment to a specified
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// destination using SendPaymentV2.
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func testSendPaymentAMP(net *lntest.NetworkHarness, t *harnessTest) {
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ctxb := context.Background()
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ctx := newMppTestContext(t, net)
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defer ctx.shutdownNodes()
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const paymentAmt = btcutil.Amount(300000)
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// Set up a network with three different paths Alice <-> Bob. Channel
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// capacities are set such that the payment can only succeed if (at
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// least) three paths are used.
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//
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// _ Eve _
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// / \
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// Alice -- Carol ---- Bob
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// \ /
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// \__ Dave ____/
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//
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ctx.openChannel(ctx.carol, ctx.bob, 135000)
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ctx.openChannel(ctx.alice, ctx.carol, 235000)
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ctx.openChannel(ctx.dave, ctx.bob, 135000)
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ctx.openChannel(ctx.alice, ctx.dave, 135000)
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ctx.openChannel(ctx.eve, ctx.bob, 135000)
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ctx.openChannel(ctx.carol, ctx.eve, 135000)
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defer ctx.closeChannels()
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ctx.waitForChannels()
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// Increase Dave's fee to make the test deterministic. Otherwise it
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// would be unpredictable whether pathfinding would go through Charlie
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// or Dave for the first shard.
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_, err := ctx.dave.UpdateChannelPolicy(
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context.Background(),
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&lnrpc.PolicyUpdateRequest{
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Scope: &lnrpc.PolicyUpdateRequest_Global{Global: true},
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BaseFeeMsat: 500000,
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FeeRate: 0.001,
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TimeLockDelta: 40,
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},
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)
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if err != nil {
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t.Fatalf("dave policy update: %v", err)
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}
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ctxt, _ := context.WithTimeout(context.Background(), 4*defaultTimeout)
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payment := sendAndAssertSuccess(
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ctxt, t, ctx.alice,
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&routerrpc.SendPaymentRequest{
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Dest: ctx.bob.PubKey[:],
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Amt: int64(paymentAmt),
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FinalCltvDelta: chainreg.DefaultBitcoinTimeLockDelta,
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TimeoutSeconds: 60,
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FeeLimitMsat: noFeeLimitMsat,
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Amp: true,
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},
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)
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// Check that Alice split the payment in at least three shards. Because
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// the hand-off of the htlc to the link is asynchronous (via a mailbox),
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// there is some non-determinism in the process. Depending on whether
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// the new pathfinding round is started before or after the htlc is
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// locked into the channel, different sharding may occur. Therefore we
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// can only check if the number of shards isn't below the theoretical
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// minimum.
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succeeded := 0
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for _, htlc := range payment.Htlcs {
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if htlc.Status == lnrpc.HTLCAttempt_SUCCEEDED {
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succeeded++
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}
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}
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const minExpectedShards = 3
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if succeeded < minExpectedShards {
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t.Fatalf("expected at least %v shards, but got %v",
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minExpectedShards, succeeded)
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}
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// Fetch Bob's invoices.
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invoiceResp, err := ctx.bob.ListInvoices(
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ctxb, &lnrpc.ListInvoiceRequest{},
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)
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require.NoError(t.t, err)
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// There should only be one invoice.
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require.Equal(t.t, 1, len(invoiceResp.Invoices))
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rpcInvoice := invoiceResp.Invoices[0]
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// Assert that the invoice is settled for the total payment amount and
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// has the correct payment address.
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require.True(t.t, rpcInvoice.Settled) // nolint:staticcheck
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require.Equal(t.t, lnrpc.Invoice_SETTLED, rpcInvoice.State)
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require.Equal(t.t, int64(paymentAmt), rpcInvoice.AmtPaidSat)
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require.Equal(t.t, int64(paymentAmt*1000), rpcInvoice.AmtPaidMsat)
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// Finally, assert that the same set id is recorded for each htlc, and
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// that the preimage hash pair is valid.
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var setID []byte
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require.Equal(t.t, succeeded, len(rpcInvoice.Htlcs))
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for _, htlc := range rpcInvoice.Htlcs {
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require.NotNil(t.t, htlc.Amp)
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if setID == nil {
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setID = make([]byte, 32)
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copy(setID, htlc.Amp.SetId)
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}
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require.Equal(t.t, setID, htlc.Amp.SetId)
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// Parse the child hash and child preimage, and assert they are
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// well-formed.
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childHash, err := lntypes.MakeHash(htlc.Amp.Hash)
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require.NoError(t.t, err)
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childPreimage, err := lntypes.MakePreimage(htlc.Amp.Preimage)
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require.NoError(t.t, err)
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// Assert that the preimage actually matches the hashes.
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validPreimage := childPreimage.Matches(childHash)
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require.True(t.t, validPreimage)
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}
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}
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func testSendToRouteAMP(net *lntest.NetworkHarness, t *harnessTest) {
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ctxb := context.Background()
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ctx := newMppTestContext(t, net)
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defer ctx.shutdownNodes()
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const (
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paymentAmt = btcutil.Amount(300000)
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numShards = 3
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shardAmt = paymentAmt / numShards
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chanAmt = shardAmt * 3 / 2
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)
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// Set up a network with three different paths Alice <-> Bob.
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// _ Eve _
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// / \
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// Alice -- Carol ---- Bob
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// \ /
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// \__ Dave ____/
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//
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ctx.openChannel(ctx.carol, ctx.bob, chanAmt)
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ctx.openChannel(ctx.dave, ctx.bob, chanAmt)
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ctx.openChannel(ctx.alice, ctx.dave, chanAmt)
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ctx.openChannel(ctx.eve, ctx.bob, chanAmt)
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ctx.openChannel(ctx.carol, ctx.eve, chanAmt)
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// Since the channel Alice-> Carol will have to carry two
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// shards, we make it larger.
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ctx.openChannel(ctx.alice, ctx.carol, chanAmt+shardAmt)
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defer ctx.closeChannels()
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ctx.waitForChannels()
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// Subscribe to bob's invoices.
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req := &lnrpc.InvoiceSubscription{}
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ctxc, cancelSubscription := context.WithCancel(ctxb)
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bobInvoiceSubscription, err := ctx.bob.SubscribeInvoices(ctxc, req)
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require.NoError(t.t, err)
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defer cancelSubscription()
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// We'll send shards along three routes from Alice.
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sendRoutes := [numShards][]*lntest.HarnessNode{
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{ctx.carol, ctx.bob},
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{ctx.dave, ctx.bob},
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{ctx.carol, ctx.eve, ctx.bob},
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}
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payAddr := make([]byte, 32)
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_, err = rand.Read(payAddr)
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require.NoError(t.t, err)
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setID := make([]byte, 32)
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_, err = rand.Read(setID)
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require.NoError(t.t, err)
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var sharer amp.Sharer
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sharer, err = amp.NewSeedSharer()
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require.NoError(t.t, err)
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childPreimages := make(map[lntypes.Preimage]uint32)
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responses := make(chan *lnrpc.HTLCAttempt, len(sendRoutes))
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// Define a closure for sending each of the three shards.
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sendShard := func(i int, hops []*lntest.HarnessNode) {
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// Build a route for the specified hops.
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r, err := ctx.buildRoute(ctxb, shardAmt, ctx.alice, hops)
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if err != nil {
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t.Fatalf("unable to build route: %v", err)
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}
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// Set the MPP records to indicate this is a payment shard.
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hop := r.Hops[len(r.Hops)-1]
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hop.TlvPayload = true
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hop.MppRecord = &lnrpc.MPPRecord{
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PaymentAddr: payAddr,
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TotalAmtMsat: int64(paymentAmt * 1000),
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}
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var child *amp.Child
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if i < len(sendRoutes)-1 {
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var left amp.Sharer
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left, sharer, err = sharer.Split()
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require.NoError(t.t, err)
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child = left.Child(uint32(i))
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} else {
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child = sharer.Child(uint32(i))
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}
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childPreimages[child.Preimage] = child.Index
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hop.AmpRecord = &lnrpc.AMPRecord{
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RootShare: child.Share[:],
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SetId: setID,
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ChildIndex: child.Index,
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}
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// Send the shard.
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sendReq := &routerrpc.SendToRouteRequest{
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PaymentHash: child.Hash[:],
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Route: r,
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}
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// We'll send all shards in their own goroutine, since SendToRoute will
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// block as long as the payment is in flight.
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go func() {
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ctxt, _ := context.WithTimeout(ctxb, defaultTimeout)
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resp, err := ctx.alice.RouterClient.SendToRouteV2(ctxt, sendReq)
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if err != nil {
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t.Fatalf("unable to send payment: %v", err)
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}
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responses <- resp
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}()
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}
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// Send the first shard, this cause Bob to JIT add an invoice.
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sendShard(0, sendRoutes[0])
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// Ensure we get a notification of the invoice being added by Bob.
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rpcInvoice, err := bobInvoiceSubscription.Recv()
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require.NoError(t.t, err)
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require.False(t.t, rpcInvoice.Settled) // nolint:staticcheck
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require.Equal(t.t, lnrpc.Invoice_OPEN, rpcInvoice.State)
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require.Equal(t.t, int64(0), rpcInvoice.AmtPaidSat)
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require.Equal(t.t, int64(0), rpcInvoice.AmtPaidMsat)
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require.Equal(t.t, payAddr, rpcInvoice.PaymentAddr)
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require.Equal(t.t, 0, len(rpcInvoice.Htlcs))
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sendShard(1, sendRoutes[1])
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sendShard(2, sendRoutes[2])
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// Assert that all of the child preimages are unique.
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require.Equal(t.t, len(sendRoutes), len(childPreimages))
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// Make a copy of the childPreimages map for validating the resulting
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// invoice.
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childPreimagesCopy := make(map[lntypes.Preimage]uint32)
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for preimage, childIndex := range childPreimages {
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childPreimagesCopy[preimage] = childIndex
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}
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// Wait for all responses to be back, and check that they all
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// succeeded.
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for range sendRoutes {
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var resp *lnrpc.HTLCAttempt
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select {
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case resp = <-responses:
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case <-time.After(defaultTimeout):
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t.Fatalf("response not received")
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}
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if resp.Failure != nil {
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t.Fatalf("received payment failure : %v", resp.Failure)
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}
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preimage, err := lntypes.MakePreimage(resp.Preimage)
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require.NoError(t.t, err)
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// Assert that the response includes one of our child preimages.
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_, ok := childPreimages[preimage]
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require.True(t.t, ok)
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// Remove this preimage from out set so that we ensure all
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// responses have a unique child preimage.
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delete(childPreimages, preimage)
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}
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childPreimages = childPreimagesCopy
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// There should now be a settle event for the invoice.
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rpcInvoice, err = bobInvoiceSubscription.Recv()
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require.NoError(t.t, err)
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// Also fetch Bob's invoice from ListInvoices and assert it is equal to
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// the one recevied via the subscription.
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invoiceResp, err := ctx.bob.ListInvoices(
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ctxb, &lnrpc.ListInvoiceRequest{},
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)
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require.NoError(t.t, err)
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require.Equal(t.t, 1, len(invoiceResp.Invoices))
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assertInvoiceEqual(t.t, rpcInvoice, invoiceResp.Invoices[0])
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// Assert that the invoice is settled for the total payment amount and
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// has the correct payment address.
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require.True(t.t, rpcInvoice.Settled) // nolint:staticcheck
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require.Equal(t.t, lnrpc.Invoice_SETTLED, rpcInvoice.State)
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require.Equal(t.t, int64(paymentAmt), rpcInvoice.AmtPaidSat)
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require.Equal(t.t, int64(paymentAmt*1000), rpcInvoice.AmtPaidMsat)
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|
require.Equal(t.t, payAddr, rpcInvoice.PaymentAddr)
|
|
|
|
// Finally, assert that the proper set id is recorded for each htlc, and
|
|
// that the preimage hash pair is valid.
|
|
require.Equal(t.t, numShards, len(rpcInvoice.Htlcs))
|
|
for _, htlc := range rpcInvoice.Htlcs {
|
|
require.NotNil(t.t, htlc.Amp)
|
|
require.Equal(t.t, setID, htlc.Amp.SetId)
|
|
|
|
// Parse the child hash and child preimage, and assert they are
|
|
// well-formed.
|
|
childHash, err := lntypes.MakeHash(htlc.Amp.Hash)
|
|
require.NoError(t.t, err)
|
|
childPreimage, err := lntypes.MakePreimage(htlc.Amp.Preimage)
|
|
require.NoError(t.t, err)
|
|
|
|
// Assert that the preimage actually matches the hashes.
|
|
validPreimage := childPreimage.Matches(childHash)
|
|
require.True(t.t, validPreimage)
|
|
|
|
// Assert that the HTLC includes one of our child preimages.
|
|
childIndex, ok := childPreimages[childPreimage]
|
|
require.True(t.t, ok)
|
|
|
|
// Assert that the correct child index is reflected.
|
|
require.Equal(t.t, childIndex, htlc.Amp.ChildIndex)
|
|
|
|
// Remove this preimage from our set so that we ensure all HTLCs
|
|
// have a unique child preimage.
|
|
delete(childPreimages, childPreimage)
|
|
}
|
|
}
|
|
|
|
// assertInvoiceEqual asserts that two lnrpc.Invoices are equivalent. A custom
|
|
// comparison function is defined for these tests, since proto message returned
|
|
// from unary and streaming RPCs (as of protobuf 1.23.0 and grpc 1.29.1) aren't
|
|
// consistent with the private fields set on the messages. As a result, we avoid
|
|
// using require.Equal and test only the actual data members.
|
|
func assertInvoiceEqual(t *testing.T, a, b *lnrpc.Invoice) {
|
|
t.Helper()
|
|
|
|
// Ensure the HTLCs are sorted properly before attempting to compare.
|
|
sort.Slice(a.Htlcs, func(i, j int) bool {
|
|
return a.Htlcs[i].ChanId < a.Htlcs[j].ChanId
|
|
})
|
|
sort.Slice(b.Htlcs, func(i, j int) bool {
|
|
return b.Htlcs[i].ChanId < b.Htlcs[j].ChanId
|
|
})
|
|
|
|
require.Equal(t, a.Memo, b.Memo)
|
|
require.Equal(t, a.RPreimage, b.RPreimage)
|
|
require.Equal(t, a.RHash, b.RHash)
|
|
require.Equal(t, a.Value, b.Value)
|
|
require.Equal(t, a.ValueMsat, b.ValueMsat)
|
|
require.Equal(t, a.CreationDate, b.CreationDate)
|
|
require.Equal(t, a.SettleDate, b.SettleDate)
|
|
require.Equal(t, a.PaymentRequest, b.PaymentRequest)
|
|
require.Equal(t, a.DescriptionHash, b.DescriptionHash)
|
|
require.Equal(t, a.Expiry, b.Expiry)
|
|
require.Equal(t, a.FallbackAddr, b.FallbackAddr)
|
|
require.Equal(t, a.CltvExpiry, b.CltvExpiry)
|
|
require.Equal(t, a.RouteHints, b.RouteHints)
|
|
require.Equal(t, a.Private, b.Private)
|
|
require.Equal(t, a.AddIndex, b.AddIndex)
|
|
require.Equal(t, a.SettleIndex, b.SettleIndex)
|
|
require.Equal(t, a.AmtPaidSat, b.AmtPaidSat)
|
|
require.Equal(t, a.AmtPaidMsat, b.AmtPaidMsat)
|
|
require.Equal(t, a.State, b.State)
|
|
require.Equal(t, a.Features, b.Features)
|
|
require.Equal(t, a.IsKeysend, b.IsKeysend)
|
|
require.Equal(t, a.PaymentAddr, b.PaymentAddr)
|
|
require.Equal(t, a.IsAmp, b.IsAmp)
|
|
|
|
require.Equal(t, len(a.Htlcs), len(b.Htlcs))
|
|
for i := range a.Htlcs {
|
|
htlcA, htlcB := a.Htlcs[i], b.Htlcs[i]
|
|
require.Equal(t, htlcA.ChanId, htlcB.ChanId)
|
|
require.Equal(t, htlcA.HtlcIndex, htlcB.HtlcIndex)
|
|
require.Equal(t, htlcA.AmtMsat, htlcB.AmtMsat)
|
|
require.Equal(t, htlcA.AcceptHeight, htlcB.AcceptHeight)
|
|
require.Equal(t, htlcA.AcceptTime, htlcB.AcceptTime)
|
|
require.Equal(t, htlcA.ResolveTime, htlcB.ResolveTime)
|
|
require.Equal(t, htlcA.ExpiryHeight, htlcB.ExpiryHeight)
|
|
require.Equal(t, htlcA.State, htlcB.State)
|
|
require.Equal(t, htlcA.CustomRecords, htlcB.CustomRecords)
|
|
require.Equal(t, htlcA.MppTotalAmtMsat, htlcB.MppTotalAmtMsat)
|
|
require.Equal(t, htlcA.Amp, htlcB.Amp)
|
|
}
|
|
}
|